Pectenocaris gen. nov., a new Brazilian Parastenocaridinae Chappuis, 1940, and Afrocaris gen. nov., a West African Fontinalicaridinae Schminke, 2010 (Copepoda, Harpacticoida, Parastenocarididae)
Abstract
This study focuses on the description of a new Parastenocaridinae species belonging to a new genus from Brazil’s Jalapão microregion and the establishment of a new genus for two West African Fontinalicaridinae species. Afrocaris gen. nov. and Pectenocaris gen. nov. differ in the morphology of the furca, with a gap between the outer setae I–III and the dorsal seta VII in Afrocaris gen. nov., and no gap between these elements in Pectenocaris gen. nov. The female genital field of Pectenocaris gen. nov. is rectangular and much broader than high than in other Parastenocaridinae. In Afrocaris gen. nov. the female endopod of the third pereopod is short, ending in a small tip, without a distal fused spine as in Pectenocaris gen. nov. Pectenocaris evilsoni gen. et sp. nov. is the type species of a new Parastenocaridinae genus. The maxillula praecoxal arthrite of Pectenocaris evilsoni is armed with six elements, a unique character within the family. The fourth pereopod of the male is heavily ornamented along the inner margin of the first and second exopodite, and cylindrical spinules with rounded tip are present on the basis, near the insertion of the short filiform endopod. The main characters supporting the new genus Afrocaris gen. nov. are the highly ornate inner margin of the first and second exopodites of the male fourth pereopod and the short fourth pereopod of the male endopod. The phylogenetic positions of Pectenocaris evilsoni gen. et sp. nov. and Afrocaris gen. nov. within their own subfamilies are challenging to ascertain due to the highly transformed male fourth pereopod in Pectenocaris evilsoni gen. et sp. nov. and the two species of Afrocaris gen. nov. as well as the absence of an intermediate condition in species closely related to each of these genera or a clear synapomorphy for a more inclusive group within each subfamily, requiring further field and morpho/molecular systematic work.
References
Ax P. 1984. Das Phylogenetische System. Gustav Fischer Verlag, Stuttgart. https://doi.org/10.1007/978-3-642-55799-6_5
Castiglione S., Serio C., Tamagnini D., Melchionna M., Mondanaro A., Di Febbraro M., Profico A., Piras P., Barattolo F. & Raia P. 2019. A new, fast method to search for morphological convergence with shape data. PLoS One 14 (12): e0226949. https://doi.org/10.1371/journal.pone.0226949
Chappuis P.A. 1959. Deux Parastenocaris des sables du Niger. Bulletin de l’Institut Fondamental d’Afrique Noire, Série A. Sciences Naturelles 21: 1211–1215.
Corgosinho P.H.C. 2007. Sistemática filogenética de Remaneicaris Jakobi (Copepoda, Harpacticoida, Parastenocarididae) da região neotropical. PhD thesis, Instituto Nacional de Pesquisas da Amazônia (INPA). Available from https://repositorio.inpa.gov.br/handle/1/11465 [accessed 4 Nov. 2024].
Corgosinho P.H.C. & Martínez Arbizu P. 2005. Two new interstitial species of Remaneicaris Jakobi 1972 from Ribeirão do Ouro River, Minas Gerais, Brazil, with a redefinition of the genus (Crustacea, Copepoda, Harpacticoida, Parastenocarididae). Senckenbergiana Biologica 85 (2): 147–162.
Corgosinho P.H.C., Martínez Arbizu P. & Reid J.W. 2008. Revision of the genus Murunducaris (Copepoda: Harpacticoida: Parastenocarididae), with descriptions of two new species from South America. Journal of Crustacean Biology 28 (4): 700–720. https://doi.org/10.1651/07-2907.1
Corgosinho P.H.C., Martínez Arbizu P. & Previattelli D. 2012a. Establishment of a new genus for Parastenocaris itica (Copepoda, Harpacticoida) from El Salvador, Central America, with discussion of the Parastenocaris fontinalis and P. proserpina groups. Iheringia 102 (4): 401–411. https://doi.org/10.1590/s0073-47212012005000009
Corgosinho P.H.C., Ranga Reddy Y. & Martínez Arbizu P. 2012b. Revision of the genus Siolicaris Jakobi, 1972, with redescriptions of S. sioli (Noodt, 1963) and S. jakobi (Noodt, 1963) from South America, and S. sandhya (Ranga Reddy, 2001) comb. nov. from India (Copepoda, Harpacticoida, Parastenocarididae). Zootaxa 3493: 49–71. https://doi.org/10.11646/zootaxa.3493.1.5
Corgosinho P.H.C., Schizas N.V., Previattelli D., Rocha C.E.F & Santos-Silva E.N. 2017. A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93 (1): 167–187. https://doi.org/10.3897/zse.93.11602
Corgosinho P.H.C., Rocha C.E.F., Martínez Arbizu P. & Santos-Silva E.N. 2021. A new genus of Parastenocarididae Chappuis, 1940 (Copepoda: Harpacticoida) from the Amazonian Region, Brazil, with close affinity to Murunducaris Reid, 1994. Nauplius 29. https://doi.org/10.1590/2358-2936e2021015
Cottarelli V., Bruno M.C. & Berera R. 2010. First record of Parastenocarididae from Thailand and description of a new genus (Copepoda: Harpacticoida). Journal of Crustacean Biology 30: 478–494. https://doi.org/10.1651/09-3201.1
Dumont H.J. 1981. Cladocera and free-living Copepoda from the Fouta Djalon and adjacent mountain areas in West Africa. Hydrobiologia 85 (2): 97–116. https://doi.org/10.1007/bf00006620
Felgenhauer B.E. 1987. Techniques for preparing crustaceans for scanning electron microscopy. Journal of Crustacean Biology 7: 71–76. https://doi.org/10.1163/193724087x00054
Ferrari F.D. & Ivanenko V.N. 2008. The identity of protopodal segments and the ramus of maxilla 2 of copepods (copepoda). Crustaceana 81 (7): 823–835. https://doi.org/10.1163/156854008784771702
Galassi D.M.P. & De Laurentiis P. 2004. Towards a revision of the genus Parastenocaris Kessler, 1913: establishment of Simplicaris gen. nov. grom groundwaters in central Italy and review of the P. brevipes-group (Copepoda, Harpacticoida, Parastenocarididae). Zoological Journal of the Linnean Society 140 (3): 417–436. https://doi.org/10.1111/j.1096-3642.2003.00107.x
Huys R. & Boxshall G. 1991. Copepod Evolution. The Ray Society, London.
Karanovic T. & Cooper S.J.B. 2011. Third genus of parastenocaridid copepods from Australia supported by molecular evidence (Copepoda, Harpacticoida). In: Defaye D., Suárez-Morales E., Vaupel Klein J.C. (eds) Studies on Freshwater Copepoda: a Volume in Honour of Bernard Dussart. Crustaceana Monographs 305–321. https://doi.org/10.1163/ej.9789004181380.i-566.116
Karanovic T. & Hancock P. 2009. On the diagnostic characters of the genus Stygonitocrella (Copepoda, Harpacticoida), with descriptions of seven new species from Australian subterranean waters. Zootaxa 2324: 1–85. https://doi.org/10.11646/zootaxa.2324.1.1
Karanovic T. & Lee W. 2012a. A new species of Parastenocaris from Korea, with a redescription of the closely related P. biwae from Japan (Copepoda: Harpacticoida: Parastenocarididae). Journal of Species Research 1: 4–34. https://doi.org/10.12651/jsr.2012.1.1.004
Karanovic T., Cho J.L. & Lee W. 2012. Redefinition of the parastenocaridid genus Proserpinicaris (Copepoda: Harpacticoida), with description of three new species from Korea. Journal of Natural History 46 (25–26): 1573–1613. https://doi.org/10.1080/00222933.2012.681316
Lang K. 1948. Monographie der Harpacticiden. Vols I and II. Hakan Ohlssons Boktryckeri, Lund.
Lee W. & Huys R. 2002. A new genus of groundwater Ameiridae (Copepoda, Harpacticoida) from boreholes in Western Australia and the artificial status of Stygonitocrella Petkovski, 1976. Bulletin of the Natural History Museum Zoology Series 68 (1): 39–50. https://doi.org/10.1017/s0968047002000055
Myers N., Mittermeier R.A., Mittermeier C.G., da Fonseca G.A. & Kent J. 2000. Biodiversity hotspots for conservation priorities. Nature 403 (6772): 853–858. https://doi.org/10.1038/35002501
Ranga Reddy Y., Totakura V.R. & Corgosinho P.H.C. 2014. Himalayacaris alaknanda n. gen., n. sp. (Copepoda: Harpacticoida: Parastenocarididae) from the hyporheic zone of a Himalayan River, Northern India. Journal of Crustacean Biology 34: 801–819. https://doi.org/10.1163/1937240x-00002281
Ranga Reddy Y., Totakura V.R. & Shaik S. 2016. A new genus and two new species of Parastenocarididae (Copepoda: Harpacticoida) from southeastern India. Journal of Natural History 50 (21–22): 1315–1356. https://doi.org/10.1080/00222933.2015.1130870
Reid J.W. 1994. Murunducaris juneae, new genus, new species (Copepoda, Harpacticoida, Parastenocarididae) from a wet campo in central Brazil. Journal of Crustacean Biology 14: 771–781. https://doi.org/10.1163/193724094x00740
Schminke H.K. 1976. The ubiquitous telson and the deceptive furca. Crustaceana 30: 292–300. https://doi.org/10.1163/156854076x00657
Schminke H.K. 2008. First report of groundwater fauna from Papua New Guinea: Kinnecaris Jakobi, 1972 redefined (Copepoda, Harpacticoida, Parastenocarididae), and description of a new species. Crustaceana 81: 1241–1253. https://doi.org/10.1163/156854008x374568
Schminke H.K. 2009. Monodicaris gen. n. (Copepoda, Harpacticoida, Parastenocarididae) from west Africa. Crustaceana 82: 367–378. https://doi.org/10.1163/156854008x363713
Schminke H.K. 2010. High-level phylogenetic relationships within Parastenocarididae (Copepoda, Harpacticoida). Crustaceana 83: 343–367. https://doi.org/10.1163/001121610x12627655658168
Schminke H.K. 2013. Stammericaris Jakobi, 1972 redefined and a new genus of Parastenocarididae (Copepoda, Harpacticoida). Crustaceana 86: 704–717. https://doi.org/10.1163/15685403-00003196
Thomaz Filho A., Cesero P., Mizusaki A.M.P. & Milani E.J. 2000. Rifting and magmatism associated with the South America and Africa break up. Revista Brasileira de Geociencias 30 (1): 17–19. https://doi.org/10.25249/0375-7536.2000301017019
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